Question

GIVE SCIENTIFIC REASON

a. It is easier to stop a tennis ball as compared to a cricket ball, when both are travelling with the same velocity
b. The velocity of an object at rest is considered to be uniform.​

Answer 1

Explanation:

Reasons.

1. It is so because the mass of a tennis ball is less than that of cricket ball moving at same velocity thus tennis ball has less momentum than the cricket ball because of this it is easier to stop a tennis ball as compared to a cricket ball when both are travelling at same velocity

2. Velocity of an object is said to be uniform when it speed and direction does not change.

The object at rest has uniform speed of zero all the time and does not even change the direction. Hence, the velocity of an object at rest is considered to be uniform.

Answer 2

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